How use “expose” Function Signature “defineComponent” expose怎么实现类型提示

[ZhangGuangHuiCoder]

import { ref, h } from 'vue'
const Comp = defineComponent(
  (props,{expose}) => {
    // use Composition API here like in <script setup>
    const count = ref(0)
    expose({ fn: () => null })
    return () => h('div', count.value)
  },
  {
    props: {},
    emits: {},
    expose:{}???
  },
)

expose 没有类型提示